<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            margin:0;
            max-width: 1200px;
            margin:0 auto;
            background-color:#eee;
        }
        #content{
            background-color: white;
            padding: 50px;
            /* box-shadow: 0 0 5px rgba(0,0,0,0.5); */
            box-sizing: border-box;
            position: relative;
            /* overflow: hidden; */
        }
        #content *{
            font-size: 14px;
            text-align:justify;
            /* text-align-last:justify; */
        }
        p{}
    </style>
</head>
<body>
    <div id="content">

    </div>
    <script type="module" src="demo.js"></script>
</body>
</html>